. Railway mechanical engineer . CO. mz% HP. 216 \ THROTTLE nj« /^ ,9« 230 THROTTLE -Indicator Cards from Locomotive 6115Lead Gear i/lth Jones Variable I90» ia«H> [ 4. I9« 4- J STARTINO-20 FULL THROTTLE. 261 8 FULL THROTTLE -Indicator Cards from Locomotives 6116 with RegularWalschaert Gear connecting the radius rod as shown, a longer valve travel willresult. This causes cut-off and to occur lat
. Railway mechanical engineer . CO. mz% HP. 216 \ THROTTLE nj« /^ ,9« 230 THROTTLE -Indicator Cards from Locomotive 6115Lead Gear i/lth Jones Variable I90» ia«H> [ 4. I9« 4- J STARTINO-20 FULL THROTTLE. 261 8 FULL THROTTLE -Indicator Cards from Locomotives 6116 with RegularWalschaert Gear connecting the radius rod as shown, a longer valve travel willresult. This causes cut-off and to occur later inthe stroke, which results in an increased mean effective pres-sure. The valve action is moreover quicker since in the samerelative time the valve travels a greater distance. A valve gear as above described was applied to a Chicago,Milwaukee & St. Paul locomotive of the Pacific type, , on June 16, 1921, and has made 40,000 miles in pas- taking away the resistance caused by lead in full cut-off, isnoticeable, while the 1/16 in. increased lead in runningnotches over that obtained from the original gear providesmore speed when hooked up. Sample indicator cars areshown of locomotive 6115 equipped with the Jones gear andof locomotive 6116 equipped with the regular Walschaertgear. These two locomotives are identical in all particularse
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
